#include <iostream>
using namespace std;

class CRectangle {
        int x, y;
          public:
            void set_values (int,int);
            int area () {return (x*y);}
};

void CRectangle::set_values (int a, int b) {
      x = a;
        y = b;
}

int main () {
      CRectangle rect;
        rect.set_values (3,4);
        cout << rect.area();
            return 0;
}
